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Subtract 21/10 from 15/2

1st number: 7 1/2, 2nd number: 2 1/10

15/2 - 21/10 is 27/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 10 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 2 × 5 = 10,
    15/2 = 15 × 5/2 × 5 = 75/10
  3. Likewise, for the 2nd fraction, since 10 × 1 = 10,
    21/10 = 21 × 1/10 × 1 = 21/10
  4. Subtract the two like fractions:
    75/10 - 21/10 = 75 - 21/10 = 54/10
  5. After reducing the fraction, the answer is 27/5
  6. In mixed form: 52/5

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